Polk County was hit as recently as 2026-07-24, 7 days ago. Polk County is hit in most years, and usually several times over. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2016-08-28 near Fertile.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Minnesota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-24, around Angus. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Polk County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 59 separate hail days here since 2010 -- 3.5 a year over 17 years of record. Those days carry 126 separate reports between them, two or three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2018, with 7 hail days. The last five years track the long-run rate, with 15 days since 2022.
Most hail here stays under 2 inches: only 4 of the 59 days on record passed it, 7%, the last on 2016-08-28. Those big days do not follow the county's usual calendar: most of them fall in August, not June. 15 of the 59 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Minnesota, see the Minnesota hail map and history.
Reports cluster nearest East Grand Forks -- 12 of the county's 59 hail days -- then Euclid (10), Crookston (7), Fertile (5) and Mentor (5). Beyond those, NOAA names Beltrami, Gully, Nielsville, Gentilly, Fosston, Trail, Climax, Key West and Erskine on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| East Grand Forks | 5 | 1.00″ |
| Crookston | 4 | 2.50″ |
| Nielsville | 3 | 1.75″ |
| 2 N Fertile | 2 | 1.75″ |
| Gully | 2 | 1.75″ |
The season runs May through August: 56 of the 59 hail days on record fall in those 4 months (95%). June is the single busiest month, with 18 of them (31%). That peak sits inside the window rather than at either end. Hail has also been reported in April and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 1 |
| May | 10 |
| June | 18 |
| July | 16 |
| August | 12 |
| September | 2 |
That day put 1 report on the map, the biggest 1.5 inches near Angus. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-24 | 1.50″ | 1 |
| 2026-07-06 | 1.00″ | 1 |
| 2025-08-14 | 1.00″ | 2 |
| 2025-07-07 | 1.00″ | 2 |
| 2024-07-13 | 1.00″ | 1 |
| 2024-06-28 | 1.75″ | 2 |
| 2023-07-26 | 1.50″ | 4 |
| 2023-07-13 | 1.00″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.5 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Red Lake County (16 hail days), Pennington County (21) and Norman County (31). Polk County takes more hail than any of them.
Red Lake County · Pennington County · Norman County
Back to the Minnesota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Polk County, Minnesota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.